Lee Soo-Ung, Huh Sun
Department of Parasitology, College of Medicine, Hallym University, Chuncheon 200-702, Repubic of Korea.
Korean J Parasitol. 2004 Sep;42(3):145-8. doi: 10.3347/kjp.2004.42.3.145.
We compared the DNA sequence difference of isolates of Clonorchis sinensis from one Korean (Kimhae) and two Chinese areas (Guangxi and Shenyang). The sequences of nuclear rDNA (18S, internal transcribed spacer 1 and 2: ITS1 and ITS2) and mitochondrial DNA (cytochrome c oxidase subunit 1: cox1) were compared. A very few intraspecific nucleotide substitution of the 18S, ITS1, ITS2 and cox1 was found among three isolates of C. sinensis and a few nucleotide insertion and deletion of ITS1 were detected. The 18S, ITS1, ITS2 and cox1 sequences were highly conserved among three isolates. These findings indicated that the Korean and two Chinese isolates are similar at the DNA sequence level.
我们比较了来自韩国(金海)以及中国两个地区(广西和沈阳)的华支睾吸虫分离株的DNA序列差异。对核糖体DNA(18S、内部转录间隔区1和2:ITS1和ITS2)和线粒体DNA(细胞色素c氧化酶亚基1:cox1)的序列进行了比较。在华支睾吸虫的三个分离株中,18S、ITS1、ITS2和cox1的种内核苷酸替换极少,并且检测到ITS1有少量核苷酸插入和缺失。18S、ITS1、ITS2和cox1序列在三个分离株中高度保守。这些发现表明,韩国和中国的两个分离株在DNA序列水平上相似。